Question about 1999 Chevrolet Blazer

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2000 blazer k the code p0785 showed up so i bought one shift solenoid but it had two and they looked exactly the same so i changed the one on drivers side and it ran a little better but only for a few days so i am buying the other solenoid but i was wondering what is the difference between the kick down and the control solenoid

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  • jservodio Jul 28, 2008

    THANK YOU SO MUCH I AM GOING TO REPLACE THE OTHER SOLENOIE AND SEE WHAT HAPPENS AND IF I STILL HAVE PROBLEMS I WILIL LET YOU KNOW THANKS AGAIN

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Code P0785 is "Slipping in first gear", the solenoids are the same if the connector plugs in. You need to find the cause of the excessive slip, it may be the torque converter, in any event a code like this takes time to set, a certain number of "drive cycles" we call it in the trade, this may take days or in some cases a week to reset the code. You will need a Scan tool to continue the testing and dertermine the cause of the code P0785. Hope this helps to find the root cause of the fault code, email if you have any further questions.

Posted on Jul 25, 2008

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1999 blazer code po785 ?


When the Powertrain Control Module (PCM) detects a continuous open, short to ground or short to power in the 3-2 SS valve assembly circuit, then DTC P0785 sets.

Possible cause are
- Low transmission fluid level
- Dirty transmission fluid
- Faulty shifting solenoid valve
- Shifting solenoid valve harness is open or shorted
- Shifting solenoid valve circuit poor electrical connection

Aug 14, 2014 | 1999 Chevrolet Blazer

1 Answer

P0785 and p0700


P0785 is a shift solenoid malfunction in the transmission probably 3-2 downshift. Someone will have to spend some time checking the decision tree for the P0785 code.

P0700 is a generic transmission fault code.

May 02, 2014 | Volvo S60 Cars & Trucks

1 Answer

From a stop engine is running fine (not over speeding) but vehicle starts slowly as if on wrong gear


code p0740 refers to torque converter clutch (TCC) solenoid --circuit malfunction Causes---Wiring---TCC solenoid--- ECM/TCM
Code p2716 refers to transmission fluid pressure(TFP) solenoid D-electrical Causes---Wiring---TFP solenoid.
Code p0785 refers to shift/ timing solenoid circuit malfunction Causes---Wiring---shift/timing solenoid---ECM?TCM The common fault here appears to be the TCM ( transmission control module) have it check out..

Apr 07, 2013 | 2005 GMC Sierra

1 Answer

What does code P0785 mean


P0785: Shift/Timing Solenoid Malfunction

- Low transmission fluid level
- Dirty transmission fluid
- Faulty shifting solenoid valve
- Shifting solenoid valve harness or connectors
- Shifting solenoid valve circuit is open or shorted

Feb 08, 2012 | 2002 Volvo S60

1 Answer

What does P0785 mean


PO785 is a shift solenoid malfunction code. Could be just solenoids that need replacement. If it has the GM trans, it's a big job as solenoids are under side cover of trans axle. Sub frame removal required. Pete

Feb 08, 2012 | 2000 Volvo V70

1 Answer

Error code P0785 on Volvo V70 XC -00. What's the problem? I have also error code P1618.


P0785 - Shift/Timing Solenoid Malfunction (3-2 shift solenoid is not working properly)
P1618 - Diagnostic Trouble Code (DTC) in another control module (in this case, in the Trans Module)

Flush the transmission, get any software upgrades available, reset the adaptors and try it, nothing to lose.

If it doesn't work you will need a transmission. Solenoids are internal, that's what controls the shifts.
They could be faulty or the valve body but one should always do what I said once, if it doesn't fix it, you're looking at a transmission.

The resetting of adaptors is crucial if you update the software. It's basically wiping the memory of the TCU (transmission controller) and teaching it how to shift properly again.

Also could check this TSB...

The reason why I ask, is because anytime there are MULTIPLE transmission solenoid codes, its usually the result of a failed ignition switch. However, since only two codes appeared and were one at a time, I think at this point, its unlikely the result of an ignition switch failure.

P0785 is for the 3-2 downshift solenoid. Either the solenoid is faulty, or something got damaged while the 1-2 solenoid was being replaced. (connector knocked loose, wire rubbing on pan or valvebody, etc...).

The 3-2 solenoid is #394 in the picture below, which is at the opposite end of the 1-2 solenoid.

zjlimited_122.gif

P0785 is for the 3-2 solenoid and that is 394 in the picture. Is it likely to fix it? yes, but of course I cannot guarantee that it will, sitting behind my computer and never seeing the vehicle.

Hope this helps.

Jan 31, 2011 | 2000 Volvo V70

1 Answer

OK i have seen my question asked several different times on here, and have seen several different answers, from a simple electrical problem to a complete transmission rebuild. 1997 Chevrolet S-10...


if you have a modulator valve on your tranny it may be bad,the vacum could be restricted on it,the mod. valve controls shifts smoothly.lucas trans. additive helps with stuck valves in trannys,

Aug 12, 2010 | 1997 Chevrolet Blazer

1 Answer

Keep getting code p0785. 1999 blazer 4x4


Depends on how handy you are. You'll need to drop the tranny pan and you'll see them all in the valve body. If you're going to go through the effort you might as well change all of them at the same time.

Here's a diagram:

http://z.about.com/d/autorepair/1/0/p/D/78407452.gif

Oct 08, 2009 | 1999 Chevrolet Blazer

1 Answer

P0740, p0753, p0758, p0785, p1860 all of them lit up on me


PO740 IS TCC SOLENOID CIRCUIT MALFUNCTION CONDITIONS.CHECK TRANSMISSION FUSE - PO753 IS A/T 1-2 SHIFT SOLENOID CIRCUIT MALFUNCTION CONDITIONS.THE 1-2 SHIFT SOLENOID HAS FAILED - PO 758 IS A/T 2 -3 SHIFT SOLENOID CIRCUIT CONDITIONS. CHECK THE ERLS FUSE - PO1860 IS TCM PWM SOLENOID CIRCUIT MALFUNCTION CONDITIONS.CHECK TRANSMISSION FUSE+ IGNITION FUSE.

Aug 02, 2009 | 2002 Dodge Ram Maxi

1 Answer

Need to replace shift solenoid a in 2000 chevy blazer


probably needs a solenoid ....its inside the pan at the rear there will be two of them that look alike "A" is the one on the driver side .....if you have an ohm meter check them both and the bad one will show open most likey .

Mar 20, 2009 | 2000 Chevrolet Blazer

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